Question

Question 7 What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?

Class XI Biology Chapter - Animal Kingdom Page 62

Answer 1

The phylum Arthropoda consists of more than 75% of the animal species found on this earth. The reasons for the success of arthropods are as follows.
i. Jointed legs that allow more mobility on land
ii. Hard exoskeleton made of chitin that protects the body
iii. The hard exoskeleton also reduces water loss from the body of arthropods making them more adapted to terrestrial conditions.